• UK-made, invisible radio wave weapon knocks out drone swarms for the first time.
  • Weapon has potential to help protect against drone threats as nature of warfare changes.
      • piecat@lemmy.world
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        20 days ago

        Radio waves are a specific wavelength/band of the EM spectrum. Light is not radio waves, just as radiowaves aren’t light. Microwaves are another specific wavelength.

        They’re both electromagnetic waves.

      • tate@lemmy.sdf.org
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        22 days ago

        Look around the space you’re in and notice that you can’t “see” the light, only the things.

            • FooBarrington@lemmy.world
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              22 days ago

              Ah yes, that’s famously why screens literally build tiny versions of the world inside them. We don’t see the light, we see the objects!

              • tate@lemmy.sdf.org
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                21 days ago

                The light that enters your eye carries enormous amounts of information with it. Your eye and a small portion of your brain comprise a highly specific tool for extracting a small subset of that information and processing it. The information you use is only related to the last object the light interacted with, not the light itself (with the small exception being the “brightness” - that has nothing to do with the object).

                No one claims to hear the air in their ears rather than the violin that is being played nearby. That’s just not what the word “hear” means.

                • FooBarrington@lemmy.world
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                  21 days ago

                  The information you use is only related to the last object the light interacted with, not the light itself (with the small exception being the “brightness” - that has nothing to do with the object).

                  This is obviously false, otherwise all objects would look the same under any color of light - yet they don’t. This example actually shows that it is only the light itself that matters, because it has the information of the objects it interacted with during its lifetime!

                  No one claims to hear the air in their ears rather than the violin that is being played nearby. That’s just not what the word “hear” means.

                  But everyone would agree that we’re hearing the sound waves produced by the violin. Again, a great example counter to your point, as the equivalent to a sound wave is the photon.

        • SocialMediaRefugee@lemmy.world
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          22 days ago

          Imagine if they showed real physics in sci-fi movies. You’d never see any laser blasts in space, just the result of their strike.

      • Morphit @feddit.uk
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        20 days ago

        Infrared lasers aren’t visible. They’re still higher frequency than radio waves. To say that visible light is visible radio is to say that the sky is green, just that it’s predominantly blue coloured green.

      • rottingleaf@lemmy.world
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        22 days ago

        Lasers are more useful in surveillance and navigation and guidance and precision work in production, for a weapon they are, most of the time, out of place. Expensive, unreliable and weak.